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Finding the Fourth Proportional to 1,827,936.86, 2,742,465.82 and 817,908.98

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Solution

The fourth proportional to 1,827,936.86, 2,742,465.82 and 817,908.98 is: 1,227,114.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,827,936.86 : 2,742,465.82 = 817,908.98 : x
  2. Step 2: Convert to fraction form
    1,827,936.86/2,742,465.82 = 817,908.98/x
  3. Step 3: Cross multiply
    1,827,936.86x = 2,742,465.82 × 817,908.98
  4. Step 4: Simplify right side
    1,827,936.86x = 2,243,087,421,521.06
  5. Step 5: Solve for x
    x = 2,243,087,421,521.06/1,827,936.86
  6. Step 6: Final answer
    x = 1,227,114.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.